Allows the list of events below the mini calendar widget to include events from future months, if there are none (or not enough) in the current month

remove-mini-cal-list-limits.php

<?php
function remove_mini_cal_list_end_date( $query ) {
	remove_action( 'tribe_events_pre_get_posts', 'remove_mini_cal_list_end_date' );
	$query->set( 'end_date', '' );
}

function listen_for_mini_cal_list( $template_file ) {
	if ( basename( dirname( $template_file ) ) . '/' . basename( $template_file ) == 'mini-calendar/list.php' ) {
		add_action( 'tribe_events_pre_get_posts', 'remove_mini_cal_list_end_date' );
	}
}

// Remove this wrapper if you want this behaviour even after pagination
if ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) {
	add_action( 'tribe_before_get_template_part', 'listen_for_mini_cal_list' );
}